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75 lines
1.7 KiB
C
75 lines
1.7 KiB
C
/** @file
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IA-32 processor specific functions to enable SMM profile.
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Copyright (c) 2012 - 2016, Intel Corporation. All rights reserved.<BR>
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#include "PiSmmCpuDxeSmm.h"
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#include "SmmProfileInternal.h"
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/**
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Create SMM page table for S3 path.
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**/
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VOID
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InitSmmS3Cr3 (
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VOID
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)
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{
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mSmmS3ResumeState->SmmS3Cr3 = Gen4GPageTable (TRUE);
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return ;
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}
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/**
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Allocate pages for creating 4KB-page based on 2MB-page when page fault happens.
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32-bit firmware does not need it.
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**/
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VOID
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InitPagesForPFHandler (
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VOID
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)
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{
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}
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/**
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Update page table to map the memory correctly in order to make the instruction
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which caused page fault execute successfully. And it also save the original page
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table to be restored in single-step exception. 32-bit firmware does not need it.
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@param PageTable PageTable Address.
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@param PFAddress The memory address which caused page fault exception.
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@param CpuIndex The index of the processor.
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@param ErrorCode The Error code of exception.
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@param IsValidPFAddress The flag indicates if SMM profile data need be added.
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**/
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VOID
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RestorePageTableAbove4G (
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UINT64 *PageTable,
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UINT64 PFAddress,
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UINTN CpuIndex,
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UINTN ErrorCode,
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BOOLEAN *IsValidPFAddress
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)
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{
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}
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/**
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Clear TF in FLAGS.
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@param SystemContext A pointer to the processor context when
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the interrupt occurred on the processor.
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**/
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VOID
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ClearTrapFlag (
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IN OUT EFI_SYSTEM_CONTEXT SystemContext
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)
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{
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SystemContext.SystemContextIa32->Eflags &= (UINTN) ~BIT8;
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}
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